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Fixes the Atomic implementation if compiled by MSVC compiler.

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sys::cas_flag should be long on this platform, InterlockedAdd() is
defined only for the Itanium architecture (according to MSDN).

Patch by Michael Beck!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90748 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Oscar Fuentes
2009-12-07 05:29:59 +00:00
parent 7e572eb37f
commit bcc2e45840
2 changed files with 5 additions and 1 deletions
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4
include/llvm/System/Atomic.h
View File

@ -20,7 +20,11 @@ namespace llvm {
namespace sys { namespace sys {
void MemoryFence(); void MemoryFence();
#ifdef _MSC_VER
typedef long cas_flag;
#else
typedef uint32_t cas_flag; typedef uint32_t cas_flag;
#endif
cas_flag CompareAndSwap(volatile cas_flag* ptr, cas_flag CompareAndSwap(volatile cas_flag* ptr,
cas_flag new_value, cas_flag new_value,
cas_flag old_value); cas_flag old_value);

2
lib/System/Atomic.cpp
View File

@ -85,7 +85,7 @@ sys::cas_flag sys::AtomicAdd(volatile sys::cas_flag* ptr, sys::cas_flag val) {
#elif defined(__GNUC__) #elif defined(__GNUC__)
return __sync_add_and_fetch(ptr, val); return __sync_add_and_fetch(ptr, val);
#elif defined(_MSC_VER) #elif defined(_MSC_VER)
return InterlockedAdd(ptr, val); return InterlockedExchangeAdd(ptr, val) + val;
#else #else
# error No atomic add implementation for your platform! # error No atomic add implementation for your platform!
#endif #endif